documenthighlighter.cpp

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// Copyright (C) 2021 The Qt Company Ltd.

// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only

#include "documenthighlighter.h"

#include <QtQuick/QQuickTextDocument>

Highlighter::Highlighter(QTextDocument *parent, int underlineTest)

    : QSyntaxHighlighter(parent)

    m_testRegex.setPattern("char");

void Highlighter::highlightBlock(const QString &text)

    QTextCharFormat fmt;

    if (m_style > 0)

        fmt.setForeground(Qt::darkBlue);

    fmt.setFontWeight(QFont::Bold);

    switch (m_style) {

    case 1:

        fmt.setFontUnderline(true);

        fmt.setUnderlineColor(QColor("cyan"));

        break;

    case 2:

        fmt.setFontUnderline(true);

        fmt.setUnderlineColor(QColor("red"));

        fmt.setUnderlineStyle(QTextCharFormat::WaveUnderline);

        break;

    case 3:

        fmt.setFontUnderline(true);

        fmt.setUnderlineColor(QColor("blue"));

        fmt.setUnderlineStyle(QTextCharFormat::DashUnderline);

        break;

    case 4:

        fmt.setFontUnderline(true);

        fmt.setUnderlineColor(QColor("green"));

        fmt.setUnderlineStyle(QTextCharFormat::DotLine);

        break;

    case 5:

        fmt.setFontUnderline(true);

        fmt.setUnderlineColor(QColor("magenta"));

        fmt.setUnderlineStyle(QTextCharFormat::DashDotLine);

        break;

    case 6:

        fmt.setFontUnderline(true);

        fmt.setUnderlineColor(QColor("orange"));

        fmt.setUnderlineStyle(QTextCharFormat::DashDotDotLine);

        break;

    case 7:

        fmt.setFontUnderline(true);

        fmt.setUnderlineColor(QColor("red"));

        fmt.setUnderlineStyle(QTextCharFormat::SpellCheckUnderline);

        break;

    case 8:

        fmt.setFontOverline(true);

        fmt.setFontUnderline(true);

        fmt.setUnderlineColor(QColor("green"));

        fmt.setBackground(QColor("lightgreen"));

        fmt.setForeground(Qt::magenta);

        fmt.setFontItalic(true);

        fmt.setFontStretch(200);

        fmt.setFontPointSize(14);

        fmt.setFontStyleHint(QFont::Decorative); // seems ignored in practice

        break;

    case 9:

        fmt.setFontStrikeOut(true);

        fmt.setUnderlineColor(QColor("orange"));

        fmt.setFontCapitalization(QFont::Capitalization::SmallCaps);

        break;

    QRegularExpressionMatchIterator matchIterator = m_testRegex.globalMatch(text);

    while (matchIterator.hasNext()) {

        QRegularExpressionMatch match = matchIterator.next();

        setFormat(match.capturedStart(), match.capturedLength(), fmt);

DocumentHighlighter::DocumentHighlighter(QObject *parent)

    : QObject(parent) {}

void DocumentHighlighter::setDocument(QQuickTextDocument *document)

    if (m_document == document)

        return;

    m_document = document;

    m_highlighter.setDocument(m_document->textDocument());

    m_highlighter.rehighlight();

    emit documentChanged();

void DocumentHighlighter::setStyle(int style)

    if (m_highlighter.m_style == style)

        return;

    m_highlighter.m_style = style;

    m_highlighter.rehighlight();

    emit styleChanged();